[ADD] accounting/l10n_es: documentation for new Veri*Factu module

Spain introduces a new EDI called "Veri*Factu" to send all invoices
to the Spanish tax agency (AEAT).
It is mandatory for most tax payers (that cannot use any of the
other Spanish EDIs like SII or TicketBAI)

In the related community PR new modules were added to enable
sending invoices and PoS orders via "Veri*Factu".

This commit adds some documentation about how to enable and use
"Veri*Factu".

Community PR: https://github.com/odoo/odoo/pull/197635

task-3745982

X-original-commit: 8e083bda75

content/applications/finance/fiscal_localizations/spain.rst

@@ -98,6 +98,104 @@ If you wish to have any amount input in the :guilabel:`II` section (from boxes :
 
 Repeat this operation for all contacts related to the **agriculture** industry.
 
+
+.. _localizations/spain/veri-factu:
+
+Veri*Factu
+==========
+
+.. note::
+   Producers of Veri*Factu billing systems must self-certify their compliance with the regulations.
+   :download:`Download Odoo's "declaración responsable"<spain/declaracion_responsable.pdf>`
+
+**Veri*Factu** is an e-Invoicing system used by the Spanish Tax Agency. It is mandatory for most
+taxpayers in Spain, except for those who use the SII system or are under a regional tax regime
+(i.e., TicketBai).
+
+Odoo allows :ref:`invoices <localizations/spain/veri-factu-invoices>` and Point of Sale :ref:`orders
+<localizations/spain/veri-factu-orders>` to be automatically sent to the tax authorities.
+
+.. _localizations/spain/veri-factu-configuration:
+
+Configuration
+-------------
+
+To enable **Veri\*Factu**, follow these steps:
+
+#. Open the Settings app to make sure your company's :guilabel:`Country` and :guilabel:`Tax ID` are
+   correctly set in the :ref:`Companies <general/companies/company>` section.
+#. :ref:`Install <general/install>` the :guilabel:`Spain - Veri*Factu (l10n_es_edi_verifactu)`
+   module.
+#. Go to :menuselection:`Accounting --> Configuration --> Settings`, scroll to the
+   :guilabel:`Veri\*Factu` section, check the :guilabel:`Enable Veri*Factu` option, and click
+   :icon:`oi-arrow-right` :guilabel:`Manage certificates` to add a certificate.
+#. In the :guilabel:`Certificates for Veri\*Factu` list view, click :guilabel:`New`.
+#. Click :guilabel:`Upload your file`, then select a certificate file and enter the
+   :guilabel:`Password` needed to open the certificate (if there is one).
+
+.. note::
+   - At least one certificate has to be uploaded.
+   - By default Veri*Factu is in testing mode. The data is sent to test servers
+     and is not considered official. When official data can be sent to the production servers, go to
+     the :guilabel:`Veri\*Factu` section in the :guilabel:`Settings` and disable :guilabel:`Test
+     Environment`.
+
+.. _localizations/spain/veri-factu-invoices:
+
+Invoices
+--------
+
+Once an :doc:`invoice <../../finance/accounting/customer_invoices>` is confirmed, it can be
+:ref:`sent <accounting/invoice/sending>`. In the :guilabel:`Send` window, the Veri*Factu option is
+available if Veri*Factu has been enabled.
+
+Click :guilabel:`Send` to generate a JSON file containing the invoice details. This file is stored
+as a Veri*Factu document. In the :guilabel:`Veri*Factu` tab, all corresponding documents are
+listed by their creation date and current status.
+
+.. tip::
+   To download a JSON file, click on its document in the :guilabel:`Veri*Factu` tab. Then, in
+   the :guilabel:`Open: Veri*Factu Documents` window, click the link in the :guilabel:`JSON` field.
+
+.. note::
+   - The document should be sent to the :abbr:`AEAT (Agencia Estatal de Administración Tributaria)`
+     immediately. However, it may be delayed due to mandatory waiting periods between submissions
+     required by the :abbr:`AEAT (Agencia Estatal de Administración Tributaria)`. In such cases,
+     the document is automatically sent the next time a scheduled action runs.
+   - A Veri\*Factu **QR code** appears on the invoice PDF. Scan this code to verify that the invoice
+     has been received and recognized by the :abbr:`AEAT (Agencia Estatal de Administración
+     Tributaria)`.
+
+.. _localizations/spain/veri-factu-orders:
+
+Point of sale orders
+--------------------
+
+Once an order has been :ref:`paid <pos/sell>`, a JSON file containing the order details is
+generated. This file is stored as a Veri*Factu document.
+
+Go to :menuselection:`Point of Sale --> Orders --> Orders`. In the :guilabel:`Orders` list view,
+select the relevant order. In the :guilabel:`Veri*Factu` tab, all the corresponding documents are
+listed by their creation date and current status.
+
+.. tip::
+   To download a JSON file, click on its document in the :guilabel:`Veri*Factu` tab. Then, in
+   the :guilabel:`Open: Veri*Factu Documents` window, click the link in the :guilabel:`JSON` field.
+
+.. note::
+   - The document should be sent to the :abbr:`AEAT (Agencia Estatal de Administración Tributaria)`
+     immediately. However, it may be delayed due to mandatory waiting periods between submissions
+     required by the :abbr:`AEAT (Agencia Estatal de Administración Tributaria)`. In such cases,
+     the document is automatically sent the next time a scheduled action runs.
+
+If an invoice is generated for an order during the payment process, the Veri*Factu document is
+:ref:`created and sent for the invoice <localizations/spain/veri-factu-invoices>` instead.
+
+.. note::
+   A Veri\*Factu **QR code** appears on the order receipt, even if an invoice is created for the
+   order. Scan this code to verify that the invoice has been received and recognized by the
+   :abbr:`AEAT (Agencia Estatal de Administración Tributaria)`
+
 TicketBAI
 =========